DNA, DNA Replication, Cell Cycle & Cancer

Cancer cells are body cells that do not function properly, leading to abnormal growth.
Which process does not function normally in cancer cells?

• Photosynthesis

• Cell cycle

• Cellular respiration

• Osmosis

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Mitosis is essential to life because it -

• Controls cell functions to ensure successful development.

• Contains four stages for gametes.

• Provides energy for the cells.

• Maintains the same genetic information from one cell to the next.

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The model represents the change in the DNA content of a cell during the cell cycle.

Which part of the model represents the S phase?

• III

• II

• III

   

  II

   

  IV

• I

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Mitosis creates two identical daughter cells. Since a human has 46 chromosomes in each of its somatic cells, how many chromosomes will be in each identical daughter cell after mitosis?

• 46

• 92

• 11

• 23

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#Part of the cell cycle is shown in this simplified model.

Telophase through cytokinesis is shown in the diagram above.  What is the final outcome of these phases in the cell cycle?

• synthesizes new molecules

• maintains genetic homeostasis

• completes cell division

• duplicates the DNA

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What is the result of cell division?

• 1 parent cell

• 2 identical daughter cells

• 1 identical daughter cells

• 2 different daughter cells

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As part of the cell cycle, a cell produces new daughter cells that are identical to the
original cell. During which phase are the two daughter cells physically separated?

• Second growth phase

• First growth phase

• Cytokinesis

• Synthesis phase

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A cell’s nucleus will divide during mitosis. What must happen before it can divide?

• the cell must make a copy of its DNA

• the cell membrane must become selectively permeable

• the ribosome must leave the cell

• the cell must make a copy of all its phospholipids

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The diagram shows cells in different phases of mitosis. A student is trying to find a cell in a particular phase of mitosis. The student is looking for evidence that spindle fibers are separating the chromosomes to ensure that each new nucleus has one copy of each chromosome.

Which cell is in the phase of mitosis that the student is searching for?

• Cell 3

• Cell 4

• Cell 2

• Cell 1

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The diagram above shows a strand of DNA. 

The structure labeled X in Figure  above is a

• nitrogen base.

• ribose sugar.

• deoxyribose sugar.

• phosphate.